Contractor License Proof

Langwasser John Construction

Licensed

Verified against CSLB on · View on CSLB

License details

License number
778396
Status
Active
Classifications
B · General Building
Contractor bond
$25,000
Workers' comp
Exempt
License term on file
May 8, 2000 – May 31, 2028

Business

  • (909) 982 1501 (CSLB public record)
  • 204 SULTANA AVENUE, Upland, CA 91786San Bernardino County

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Frequently asked questions

Is Langwasser John Construction licensed in California?

Yes. Langwasser John Construction holds an active California state contractor license (CSLB #778396), verified against the CSLB public record on June 17, 2026.

What is Langwasser John Construction's CSLB license number?

Langwasser John Construction's California contractor license number is 778396. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=778396

What kind of work is Langwasser John Construction licensed for?

Langwasser John Construction is classified under General Building (B) by the CSLB.

How do I verify Langwasser John Construction's license myself?

Look up license #778396 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=778396. This page reflects the CSLB public record as of June 17, 2026.

See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.